Has Kahlua changed its formula recently?
Kahlua has changed its bottle design and now features prominently the assertion that it is a rum and coffee liqueur. Kahlua never used to claim this. When I bought a bottle, the liqueur seemed thin, more like the consistency of Tia Maria, rather than the very thick consistency of Kahlua that I've grown accustomed to over the years. Also, the stores seem to have dropped the price for Kahlua by about six dollars.
Kahlua changed the alcohol level back in 2003 from 53 proof to 40 proof.
That said, many people have been complaining about a flavor/consistency change around a year ago. I have some old bottles at work and will do a side by side comparison. But, Kahlua does change flavor over time. It loses coffee notes as it ages.
I noticed this too a few months ago, just doesn't seem the same. Much prefer Cafe Patron (or Patron Cafe)